package cn.tedu.io;

import java.io.*;

public class BISDemo {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("demo.txt");
        BufferedInputStream bis = new BufferedInputStream(fis);
        FileOutputStream fos = new FileOutputStream("demo_cp.txt");
        BufferedOutputStream bos = new BufferedOutputStream(fos);
        int d;
        while ((d = bis.read())!=-1){
            bos.write(d);
        }
        System.out.println("复制完毕,耗时:"+System.currentTimeMillis()+"ms");
        System.out.println(fos);
        bis.close();
        bos.close();
    }
}
